System of radiosignaling



July 20,1926.' 1,592,925

F. CA'RBENAY SYSTEM OF mmosmmune Filed April 4, 1 924 anvi /WM firm/v0 amwr 3% San Patented July 20, 1926.

UNITE D STAT ES FERNAND CARBEN'AY, OF PARIS, FRANCE.

SYSTEM OF RADIOSIGNALING.

Application filed April 4, 1924, Serial No. 704,247, and in France May 12, 1923.

My inventionrelates in general to radio signaling systems.

'One of the principal objects of my invention is the provision of means foreasily and conveniently adapting a radio sign-at ing system for the efficient reception of waves of various wave lengths The operation and other objects of my invention will be better understood from the billowing description taken in connection with the drawing, inzwhich The figure is a schematic diagram of a preferred embodiment of my system.

Referring to the figure, an inductance coil 1 has one extremity connected to ground G thru lead 2 and the other extremity connected to stationary contact 3 thru lead 4. The movable spring contact 5 is normally biased to make contact with stationary contact 3. Movable spring contact 5 is con neoted to primary coil 6 of the signaling apparatus t-hru lead 7. The primary coil is connected to ground G thru lead 8.

The inductance coil 1 has a plurality of taps 9, 10, 11 and 12 connected to a plurality of sockets 13, 14, 15 and 16 respectively. One set of plates of a condenser 17 is connected to one of the extremities of the inductance coil 1, while the other set of plates of the condenser is connected to a socket 18.

The antenna 19 is connected to plug 20 by means of a flexible lead 21. The plug 20 has a guiding and retaining member 22 for ground G thru flexible lead 21, plug holding the positions.

The operation of my invention depends on the utilization of the well known principle of varying the natural wave length of a signaling system by introducing inducta-nce or capacity or both in series of parallel or both in the system.

If comparatively long waves are to be received, the plug 20 is inserted in the guiding member 22, which disconnects the movable contact 5 from the stationary contact 3. The inductance coil 1 and condenser 17 plug in one of its operative are thereby eliminated from the signaling system and the antenna 19 is connected to 20, movable contact 5, lead 7, primary coil 6 and lead 8.

To change the natural wave length of the system, the plug 20 may be withdrawn from guiding member 22, thereby causing contact 5 to contact with the stationary contact 3,

and inserted in any one of the sockets 13, let, 15, 16 or 18to vary the ratio of the apacity to the inductance in the system by introducing capacity or inductance or both in parallel or series or both in the signaling system. I

Although I have shown a preferred cmbodiincnt of my invention, I wish'it to be distinctly understood that I do not limit myself to said preferred embodiment; but may employ such otherv modifications as are embraced within the scope and spirit of my invention.

Having described my invention, what I claim is:

1. In a radio signaling system, in con1- bination, an antenna, a plug connector connected to said antenna, a stationary contact, a flexible movable contact normally contacting with said stationary contact, a primary coil of a signaling system connected to said movable contact and to ground, an inductance coil connected between said stationary contact and ground, a guiding and retaining member in proximity to said movable contact whereby the insertion of said plug in said member separates the movable and stationary contacts to exclude said inductance coils from the system and connect said antenna to ground in series with the primary winding of the system.

2. In a radio signaling system, in combination, an antenna, a plug connector connected to said antenna, a stationary contact, a. flexible movable contact normally contacting with said stationary contact, a primary coil of a signaling system connected to said movable contact and ground, an inductance coil connected between said stationary contact and ground, a plurality of taps connected to said inductance coil, a socket member connected to each tap whereby the insertion of the said plug in any one of said sockets connects said inductance coil in the signaling system.

3. In a radio signaling system, in combination, an antenna, a plug connector con-- nected to said antenna, a stationary contact. a flexible movable contact normally contacting with said stationary contact, a condenser, means for simultaneously connecting the antenna in series with the condenser, the inductance coil and the primary winding, and for placing the inductance coil in shunt with the primary coil at a single operation of the plug.

In a radio signaling,syste1n, in combination, an antenna, a plug-connector connected to said antenna, a stationary contact,

afiexble movable Contact normally contacts :GllCLllt when the movable contact 1s 111 nor- ,mal position, a ground and means to ading with s aid stationary contact, a primary i (oil of asignaling system connected to said novahle contact'and to ground,- an inductance coil connected between 'said'contact and ground, a plurality of taps connected to said inductance coil,a condenser and means for simultaneously exclnding 'said condenser and for connecting said induction coil in shunt with the primary coil. r

In a radio signaling system, in comhi-' nat on, an antenna, a plug connector connec-ted'to said antenna, a stationary contact.

" a flexible movablecontact,"a primary coil and inductance coll forming aclosedcntw cuit whenthe movable contact IS n normal position, a condenser'and means to place 'ihc coneen'serj'in series with the closed circuit and the ground and means to place the antenna in series with the condenser.

6. Ena racio signaling system, in combiconnected.

nected to said antenna, a stationary contact,

a flexible movable contact, a primary coil and a Variable inductance forming a closed circnitand the ground whereby the signaling system may be put in position to receive short Waves of various lengths.

7. In a radio signaling system, in combination, an antenna, a plug connector connected to saidantenna, a stationary contact,

flexible movahle'contact, a primary coil and an inductance'coil forming a closed circuit Whenthe movable contact is in contact w ith the stationary contact, a condenser, means to, include said condenser 1n the 'said closed circuit and to exclude the condenser from the circuit and means to adjustably connect the antenna to the condenserwhereby long and short waves may be optlonally 'FLRNA'ND OARBENAY. 

